@article{oai:niigata-u.repo.nii.ac.jp:00002488,
 author = {Gontia, I. and Frolov, S. V. and Liess, M. and Ehrenfreund, E. and Vardeny, Z. V. and Tada, K. and Hidayat, R. and Fujii, A. and Yoshino, K. and Teraguchi, M. and Masuda, T},
 issue = {20},
 journal = {Physical Review Letters},
 month = {May},
 note = {We studied the excitation dynamics in films of disubstituted polyacetylene, a degenerate ground-state conjugated polymer, using psec transient and steady-state spectroscopies. The polymer is found to support charged and neutral topological soliton excitations concurrent with a strong intrinsic photoluminescence band with quantum efficiency, η= 50%. This leads to stimulated emission in thin films and lasing in cylindrical μ cavities. The seeming contradiction of a degenerate ground-state polymer with highη is explained by the lowest excited-state ordering.},
 pages = {4058--4061},
 title = {Excitation Dynamics in Disubstituted Polyacetylene},
 volume = {80},
 year = {1999}
}